realm-js: [5.0.0] Android returns Results with length 1 but no keys or values

Goals

I am trying to fetch some objects from database.

Expected Results

Getting 1 object with all properties.

Actual Results

I get Results of length 1 but when getting the object via index 0, it returns no properties.

Steps to Reproduce

Run the code on Android

Code Sample

const results = realm
        .objects<ImporterAuthenticationModel>(ImporterAuthenticationModel.schema.name)
        .filtered('importerId = $0', importer.importer.id);

      if (results) {
        console.log(results.length);
        console.log(results[0].id);
      }

Output is:

1
undefined

Schema:

export class ImporterAuthenticationModel extends BaseModel {
  public static schema = {
    ...BaseModel.schema,
    name: 'ImporterAuthenticationModel',
    primaryKey: 'uniqueId',
    properties: {
      ...BaseModel.schema.properties,
      uniqueId: 'string',
      id: 'string',
      title: 'string',
      subTitle: 'string?',
      imageUrl: 'string?',
      importerId: 'string',
      additionalDataString: 'string?',
      rawStatus: { type: 'int', default: ImporterAuthenticationStatus.AUTHENTICATED },
      expiresAt: 'int'
    }
  };

Version of Realm and Tooling

Realm JS SDK Version: 5.0.0
Node or React Native: React Native
Client OS & Version: Android 9PKQ1.181121.001 (Mi 9 Lite)
Which debugger for React Native: React Native Debugger (but it also fails if using production build from FireBase)

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 33 (14 by maintainers)

Most upvoted comments

I am facing the same issue. Android its not working. iOS Working.

    "realm": "^5.0.2",

This is the results i am getting in Android Device.

{"0": {}, "1": {}, "2": {}, "3": {}, "4": {}, "5": {}, "6": {}, "7": {}, "8": {}}

iOS (Simulator) it’s working as expected Realm without any issues…

saravanakumargn on Mar 26, 2020

Same problem is here. But our project uses realm.objects() methods everywhere and some method call is fine but others not working.

Upon investigation, we found that it worked fine for classes that inherited from Realm.Object, but returned an empty object for classes that didn’t. This is odd.

Working correctly:

export class RealmPlayLog extends Realm.Object {
  static readonly schema: ObjectSchema = schema

  ...
}

Not working correctly:

export class RealmPlayLog {
  static readonly schema: ObjectSchema = schema

  ...
}

“realm”: “^6.0.1” (yarn.lock says 6.0.1) “react-native”: “0.61.5”,

iOS Simulator: iPhone 11 (13.1)

keima on Jun 9, 2020

I can confirm the issue on with React Native 0.61.5 and Realm 5.0.2 on Android running in an emulator. Thanks for reporting this @bimusiek!

kraenhansen on Mar 23, 2020

@MrScorp did you used a debugger when checking that. Could you try without attaching a debugger

blagoev on Apr 8, 2020

Realm JS 5.0.3 is released fixing this. Closing this issue. If it is not fixed for someone for some unexpected reason, just reopen it.

blagoev on Apr 1, 2020

@kraenhansen I am passing ImporterAuthenticationModel.schema to realm.

  const user = await getRealmUser();
  const realmConfig = user.createConfiguration({
    schema,
    schemaVersion,
    sync: {
      url: `~/app`,
      fullSynchronization: true
    }
  });
  const realm = new Realm(realmConfig);

where schema & schemaVersion are:

export const schema = [
  ConfigRealmModel.schema,
  CollectionModel.schema,
  CollectionItemModel.schema,
  ImporterAuthenticationModel.schema,
  TransferModel.schema,
  TransferCollectionModel.schema,
  TransferCollectionItemModel.schema,
  LicenseRequestModel.schema
];
export const schemaVersion = 1;

The same code works on both 3.6.5 version and 4.0.0-beta2. 5.0.x works on iOS + Electron + Node Server but it does not return any keys and values on Android. Creating & updating models work though, and it is synced to the Cloud.

I tried bumping JSC to newest version, it did not help.

bimusiek on Mar 23, 2020